Current Density, Electric Field and AC Loss Simulation of Mono Block and Single Layer Polygonal HTS Cable Using COMSOL Multiphysics
G. Konar, R. K. Mandal, and N. Chakraborty
Electrical Engineering Department, Seacom Engineering College, Dhulagar,West Bengal, India
Power Engineering Department, Jadavpur University, Kolkata, West Bengal, India
High temperature super conducting (HTS) cables are gaining attentions for their ability to transmit more power compared to their convention counterparts with essentially no resistance and electromagnetic emissions. They are also appropriate for solving the grid congestion problem in the power corridors with their reduced size and weight. But the AC loss that occurs in the HTS cables reduces the ...
J. Heinonen, M. Erdmanis, I. Tittonen
Aalto University, Department of Micro- and Nanosciences, Espoo, Finland
We present a simplified 3D model that simulates the operation of a linear microscale integrated ion trap. It employs a set of metalized electrodes, which are formed on top of an insulator layer on silicon substrate. The confinement in all three dimensions is provided by the application of the specific AC and DC voltages to the corresponding trap electrodes. The distribution of the trapping ...
Electromagnetic Actuators Modeling, Simulation and Optimization: Review of Methods and Their Application for Switching Devices - new
O. Craciun, V. Biagini, G. Stengel, C. Reuber, C. Chao, B. Funieru , A. Binder
ABB Corporate Research, Ladenburg, Germany
ABB AG Calor Emag Mittelspannungsprodukte
TU Darmstadt, Department of Electrical Energy Conversion, Darmstadt, Germany
Electromagnetic actuators are representing one important component of ABB's medium voltage reclosers [1, 2]. Their performance is strongly influenced by the considered material properties as well as by the electronic control units that will power the actuator. Depending on the studied phenomena, different modeling, simulation and optimization methodologies are being used for medium voltage ...
D. Rauly , P. Xavier , E. Chamberod , J. M. F. Martins , J. Angelidis , H. Belbachir 
 IMEP-LAHC, Universite Grenoble Alpes, France
 IUT, Universite Grenoble Alpes, France
 LTHE, Grenoble Alps University - CNRS - IRD, France
 LEAS, St. Ismier, France
 HBA Biotech SA, Grenoble, France
The subject of the interactions between electromagnetic (EM) fields and living cells is a strong issue for several decades . Large number of works have been done to study the EM field penetration and inner induced currents in living microorganisms. Relevant information to be collected deals with level and frequency of the EM signal that may affect the development of the considered cells. The ...
李晓南 , 刘国强 ,
利用惯性力学和电磁学，研究了一个金属小车沿着磁铁铺就的轨道做减速直线运动。其中，小车也可以看成是携带等量的磁铁剩磁，且沿着铁磁轨道减速运动。通过赋予小车一个初速度，例如100 m/s，然后再根据实际情况、赋予它一个特征密度，即小车有了一定的质量。当认为小车沿水平方向的轨道减速运动，忽略重力、空气阻力等其他一些影响因素时，小车将只受电磁的洛伦兹力的作用，而逐渐减速到零。 利用最新版的 COMSOL Multiphysics®，建模过程中，主要用到了“磁场和电场(mef)”和“全局常微分和微分代数方程(ge)”接口，涉及到的动力学和电磁学方程为 dv/dt=F/m F ⃗=∫_(V_vehicle)▒〖(J_induced ) ⃗×B ⃗dv〗 J_(i_y)=σ(v_z∙B_x-v_x∙B_z ) v 为小车即时速度，F 为洛伦兹力，J 为感应产生的涡流，v 为速度，B ...
L. Santandrea, and Y. Le Bihan
Laboratoire de Génie Electrique de Paris, Gif-sur-Yvette, France
Eddy current testing (ECT) is widely used to check the integrity of electrically conducting parts and notably to detect flaws. It is based on the interaction between a probe and the part under testing. The finite element method (FEM) is well fitted to the modelling of these kinds of problems because of its large flexibility which allows to deal with complex probe and part configurations. In this ...
S. V. Kulkarni
Indian Institute of Technology
S. V. Kulkarni a Professor in Electrical Engineering Department, Indian Institute of Technology, Bombay, India. Previously, he worked at Crompton Greaves Limited and specialized in the design and development of transformers up to 400 kV class. He has authored book \"Transformer Engineering: Design and Practice\" published by Marcel Dekker, Taylor & Francis Group. The author of more than 120 ...
J. Güdelhöfer, R. Gottkehaskamp, A. Hartmann
Department of Electrical Machines and Electromagnetic Field Theory, University of Applied Sciences Düsseldorf, Düsseldorf, Germany
This paper shows how a time-dependent and non-linear simulation of the dynamic operation behavior of an induction machine is executed by means of the \"Rotating Machinery\" interface from COMSOL Multiphysics 4.2a. The two-dimensional FEM model is connected to electrical circuits by coupling the physics \"Rotating Machinery\" and \"Electrical Circuit\" interfaces. These circuits include the ...
Effect of a High Frequency Field on the Electric Double Layer Surrounding a Biomolecule in a Fluid - new
M. Riou, C. Maedler, S. Erramilli, P. Mohanty
Boston University, Boston, MA, USA
Biosensors based on silicon nanowires are of great interest for ultrasensitive biomolecular recognition of disease specific markers for early stage diagnosis . However, there are limitations on the performance of these nanosensors in solutions at high ionic strength. This is because the electric field induced by the binding of biomolecule is partially screened on length-scales larger than the ...
R. Schlanbusch, S. A. Halvorsen, S. Shinkevich, D. Gómez
Teknova, Kristiansand, Norway
Department of Applied Mathematics & ITMATI, Universidade de Santiago de Compostela, La Coruña, Spain
The problem under investigation is electrical scale-up of a generic metallurgical process for primary metal production through resistive heating of slag by electric current, typically supplied by an AC three-phase system. Maxwell’s equations are analyzed revealing that the properties of the solution is determined by the parameter (L/δ)^2, where L is the linear size of the system and δ is the ...